Improvement in gas-stoves



U NTTED STATES PATENT OEEICE.

I SAMUEL T. MCDOUGALL, OF NEW' YORK, N. Y.

IMPROVEM ENT IN GAS-STOVES.

Specification forming part ot Letters Patent No. l 3,4 R9, dated July 5, 1864.

T0 all whom, it may conce-7171,:

Be itknown that I, SAMUEL T. MCDOUGALL, of the c'ity, county, and State of N ew York, have invented a new and Improved Mode ot' Constructing Stoves for Burning Gas and other Fuels; and I do hereby declare that the fol` lowing is a full and exact description thereof', reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature ot' my invention consists in constructing `stove-s in the form ot' steps or angles, and also in combining with them a baking and roasting oven. v

To en able othersskilled in the art to make and use my invention, will I proceed to describe its construction and operation.

I construct my stoves in the form ot' steps or angles, as shown at Figure l, and also combined with them a baking and rca-sting oven, as shown at Fig. l, A and B. Each step or angle has a hole and griddle. From ihe upper step or angle the waste heat is discharged through the pipe C. Attached to the stoves are gaspipes D, and the necessary supports to keep the stove in its proper position, as shown at Fig. l. Each step or angle has its own burner or iirebox, laccording to the fuel used, as shown at Fig. 2, E E E. When gas or oils are used as fuel, I construct a cylinderopen at top and bottom-around each burner, as shown at Fig. 2, F F F. The gas is conveyed to the burners through the pipe D, `each burner having the necessary stop-cocks A tire under a vessel on lthe lower step discharges its waste heat into the step above and assists in heating a vessel there, and so on through any number required, each iire assisting the ones above, instead of discharging the waste heat` around the vessel, as is customary. When charcoal, coke, coal, 0r wood are used tor fuel, the cyl inders F F F are converted into iire-boms by nearly closing the bottoms, and allowing only a sulticient opening at the bottom or side for drat't. When oils, naphtha, or other liquors are used as fuel, I substitute the vapor or oil burners in place of the gas-burners E E E. The'bakingoven A, I construct in the ordinary form ot` square metal ovens, having a door in one side and an opening in the bottom, as shown at Figs. 1 and 3. When used on the top of oven B, as represented, it receives its heat through the opening in the bottom. rEhe oven A can also be used on any of the steps or angles byv removing the griddle. The roasting-oven B is constructed in thc sanne form as A, except it has an opening in the top instead of the bottom. Directly under this opening is placed the burner H H. This burner is made in the form of a tlat metal case, perforated on the lower side, and burning the gas downward, as shown at Fig. 3, H H. The gas is supplied to the burner from the pipe D, said pipe passing around or under the stove and connecting with the burner in the oven B. r

I do not confine myself to the precise form ot stove here described, but shall construct them in any form substantially the same and Which will produce the intended effect.

I claim A gasstove constructed in a rising series, communicating with each other substantially as described, .each supplied with a separate combustion-cylinder, operating as specitied.

SAMUEL T. MCDOUGALL. Witnesses GEO. BEYTON, J. S. BROWN. 

